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cpu_ucode.c revision 1.1 
      1 /* $NetBSD: cpu_ucode.c,v 1.1 2012/01/13 16:05:15 cegger Exp $ */
      2 /*
      3  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Christoph Egger.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: cpu_ucode.c,v 1.1 2012/01/13 16:05:15 cegger Exp $");
     33 
     34 #include "opt_cpu_ucode.h"
     35 
     36 #include <sys/param.h>
     37 #include <sys/cpuio.h>
     38 #include <sys/cpu.h>
     39 
     40 #include <dev/firmload.h>
     41 
     42 #include <machine/cpuvar.h>
     43 #include <machine/cputypes.h>
     44 
     45 #include <x86/cpu_ucode.h>
     46 
     47 static struct cpu_ucode_softc ucode_softc;
     48 
     49 int
     50 cpu_ucode_get_version(void *data)
     51 {
     52 	struct cpu_ucode *ucode = data;
     53 
     54 	switch (cpu_vendor) {
     55 	case CPUVENDOR_AMD:
     56 		return cpu_ucode_amd_get_version(ucode);
     57 	default:
     58 		ucode->version = (uint64_t)-1;
     59 		return EOPNOTSUPP;
     60 	}
     61 
     62 	return 0;
     63 }
     64 
     65 int
     66 cpu_ucode_md_open(firmware_handle_t *fwh, const char *fwname)
     67 {
     68 	switch (cpu_vendor) {
     69 	case CPUVENDOR_AMD:
     70 		return cpu_ucode_amd_firmware_open(fwh, fwname);
     71 	case CPUVENDOR_INTEL:
     72 		return EOPNOTSUPP; /* not yet supported */
     73 	default:
     74 		return EOPNOTSUPP;
     75 	}
     76 }
     77 
     78 int
     79 cpu_ucode_apply(void *data)
     80 {
     81 	struct cpu_ucode *ucode = data;
     82 	struct cpu_ucode_softc *sc = &ucode_softc;
     83 	int error;
     84 
     85 	error = cpu_ucode_load(sc, ucode->fwname);
     86 	if (error)
     87 		return error;
     88 
     89 	switch (cpu_vendor) {
     90 	case CPUVENDOR_AMD:
     91 		error = cpu_ucode_amd_apply(sc);
     92 		break;
     93 	default:
     94 		return EOPNOTSUPP;
     95 	}
     96 
     97 	if (sc->sc_blob != NULL)
     98 		firmware_free(sc->sc_blob, 0);
     99 	sc->sc_blob = NULL;
    100 	sc->sc_blobsize = 0;
    101 	return error;
    102 }
    103